Log-sawing machine.



PATENTED APR. 25, 1905.

G. E. BROWN. LOG SAWING MACHINE.

APPLIUATION FILED 11:14.26, 1904.

A from/Hs,

No. 788,243. PATENTED APR. 25, 19Q5. G. E. BROWN.

LOG SAWING MACHINE.

APPLICATION FILED FEB. ze. 1904.

5 SHEETS-SHEET 2.

hI5 J4-` W/TNESSES.' INVENTOH A Trop/VE Ys, I

No. 788,243. PATENTED APR. 2 5, 1905.

- C. E. BROWN.

LOG SAWING MACHINE.

APPLICATION TILEDPEB. 26, 1904.

y 5 SHEETS-SHEET 3.

M L y all! PATENTED APR. 25, 1905.

5 SHEETS-#SHEET 4.

No. 788,243. Y

c. E. BROWN. LoG SAWING MACHINE.

APPLICATION FILED FEB. 26. 1904.

WITNESSES:

No. 788,243. PATBNTED APR. 25, 1905. o. E. BROWN.

LOG SAWING MACHINE.

APPLIOATIOX `FILED FEB? 26. 1904.

5 SHEETS-SHEET 5.

A TTOHNE YS Patented April 25, 1905.

PATENT OEEICE.

CHARLIE ENOCH BROVN, OF STAYTON, OREGON.

LOG-SAWING MACHINE.

SPECIFICATION forming part of Letters Patent NO. 788,243, dated April25, 1905.

Application filed February 26, 1904. Serial No. 195,367.

To rtl/ whom, t may concern.-

Be it known that 1, CHARLIE ENooH BROWN, a citizen of the United States,and a resident of Stayton, in the county of Marion and State of Oregon,have invented a new and Improved Log-Sawing Machine, of which thefollowing is a full, clear, and exact description.

My invention relates to ,log-sawing machines, and particularly toamachine in which is combined a friction-nigger, a cant-handler, andlog-deck skid-chains.

r1`lie purpose of the invention is to provide a machine of the abovecharacter embodying the parts named which will be of simple, durable,and economic construction, wherein `a nigger, cant-handler, and log-deckskidchains are controlled by a single lever capable of operation in fourdirections, and wherein there are no steam pistons or joints to be keptin ord er, as in a steam-nigger, and wherein the log turns away from thenigger, preventingit from tearing off slivers, and wherein, further,lthe log falls upon the skids when turning, thereby avoiding jar to thecarriage.

Another purpose of the invention is to so construct the machine thatthin wide cants may be turned one at a time or wherein'several cants maybe turned at once, which is a great advantage in mills having' nopony-saw.

The invention consists in the novel construction and com bination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a vertical central longitudinal section through the machine.Fig. 2 is a plan View of the machine. Fig. 3 is a plan view of thespools for the nigger push-bar, skid-chains, and driving mechanismtherefor and the frame in which said parts are mounted. Fig. 4 is a sideelevation of the parts shown in Fig. 3 and a side elevation of ashifting device for bringing one or the other spools into action. Fig.in is a detail View of a universal lever for operating the shiftingdevices. Fig. 5 is a transverse section through the hydraulictank-cushions for the nigger. Fig. 6 is a sectional side elevation ofthe machine, and Fig. 7 is a plan view of the parts shown in Fig. 6.Fig. 8 is a detail View illustrating the mounting of the shifting-lever.

A represents the log-table of the machine, which table is provided withlongitudinal skids or offsets 10, formed at regular intervals upon itsupper surface, and in the outer offsets or skids 10 longitudinal slots11 are produced, extending through the table. At each end of each slot11 peripherally-grooved pulleys 12 are mounted to revolve, which pulleysare practically idlers.

B represents the carriage, which is provided with slideways 13, offsetfrom the upper face of the carriage, the said slideways 13 beingopposite the outer ends of the slotted skids or offsets 10 on thelog-table. In the slideways 13 head-blocks 14, of any suitableconstruction, are adjustably mounted.

Centrally between the slideways 13 in the inner edge of the carriage B,or the edge which faces the log-table A, an opening 15 is produced, andthe bottom portion of the said opening is conveXed in an outwarddirection, forming thereby a cam-surface 16. (Shown best in Fig. 1.) Thesaid carriage B is provided with wheels 17, traveling'on a track 18,which track is supported by a suitable transverse beam secured to theupper side beams 19, as is indicated in Fig. 1, and the said log-tableis suitably supported on the said side beams 19 of the frame. rlhe sidebeams 19 of the frame are in their turn supported by any desired numberof cross-beams 20, and the cross-beams 20 are held in position bystandards 21. Where the cross-beams 2O are not employed and thestandards 21 are used, they may be carried directly up to an engagementwith the side beams 19. Furthermore, lower bars or beams 22 are carriedfrom standard to standard, and these are floored over, particularlybelow the central portion of the log-table A, as is shown at 22 in Fig.1.

The nigger C may be constructed of wood or of iron or partially of onematerial and partially of the other, as is shown in Fig. 1. The nigger Cpasses down through a suitable opening in the carriage B adjacent to theopening IOO 15 in the inner edge of the said carriage, as is shown inFig. 2, and the said nigger is provided with a slot 23 near its upperend extending through from one side to the other, and in this slot theinner end of a dog 24 is pivoted, which dog in action extends ont beyondthe inner face of the nigger, and its outer or free end is weighty andis wider than at its pivotal end, and at the outer end of the dog 24teeth 25 are formed. Vhen the nigger is carried downward free from thecarriage B, the dog 24 is carried entirely within the slot 23, as isshown by dotted lines in Fig. 1, by reason of the free end of the dogengaging with the cam 16 at the downward movement t of the nigger, andwhen the niggeris carried upward for action through the opening in thecarriage B the dog 24 will naturally drop downward into workingposition, as its outer end is the heaviest; but the dog 24 is preventedfrom dropping downward during its inactive period by engagement at suchtimes with suitable guides on the frame of the machine.

The lower end of the nigger C is adapted to operate in a cushion-tankC', and this tank is preferably constructed as is illustrated in Fig. 5,in which it will be observed that the tank consists of a box-body havinga series of apertures 26, and at the top of the box-body a cupiange 28is formed, and at the bottom a valve 27 is located. Around the lowerportion of the nigger a collar 29 is located, which collar is adapted tofit snugly in a chamber 30, made by the cup-fiange 28, when the niggeris in its lowermost position. Th us it will be observed that a doublecushion is provided for the nigger, and it receives comparatively littleshock and creates no noise when it is carried to its lower position. Thesurplus cushion material passes out through the apertures 26 at thedownward stroke of the nigger C, and at the upward stroke of the niggeradditional cushion material is drawn up through the valve 27 in thebottom of the hydraulic-cushion tank.

A drive-shaft 31 is horizontally located beneath the upper beams 19 ofthe frame of the machine, and this shaft, as is shown in Fig. 2, isabout central with respect to the slots 11 in the log-table A. Thehangers 32 for the shaft 31 are shown in dotted lines in Fig. 1. Asprocket-wheel 33 is located at each end of the shaft 31, and thelog-deck skid-chains 34 are passed over the idlers l2 in the slots 11 inthe log-table A and around the sprocket-wheels 33 just described, thesaid log-deck skid-chains being endless.

The push-bar D is located adjacent to the inner edge of the nigger C andin horizontal alinement with the said nigger, and the said push-bar isof angular construction, its upper outer limb CZ being longer than itslower inner hmbd, as is shown 1n Fig. l. The pivot-pin 35 for the saidpush-bar D is suitably supported beneath the log-table and passesthrough the said push-bar at the junction of its limbs.

On the. upper longitudinal edge-of the outer or upper limb Z of thepush-bar D teeth 36 are formed, and on one side of the said pushbar D atits pivot-point an eccentric 37 is produced. (Shown in Figs. 1 and 2.)This eccentric 37 as the upper limb of the push-bar is carried upwardand toward the nigger, as is shown in dotted lines in Fig. 1, serves toraise the free end of a skid 38, the opposite end of the skid beingsuitably pivotedto the log-table, as is shown at 39 in 2, and when thefree end of the skid 38 is raised by the raising action of the push-barD the said free end of the skid 38 will be brought on about a level withthe top of the carriage B,so that the logs carried by the chains 34 maybe carried on to the carriage without interruption, and the slideways13, which form skids on the carriage, prevent the carriage fromreceiving undue jar or shock when the logs are rolled thereon or whenthe logs are turned.

A hydraulic-cushion tank is provided for the push-bar D, constructedpractically in the same manner as the tank C described, except that thecup-Harige is omitted, and such connection is made in the followingmanner: A swinging arm 40 is pivoted to thc log-table A, extendingdownwardly therefrom when the push-bar is in its lower or normalposition, and a rod 41 is pivoted to the link 40 near its upper end andto the lower or inner limb al of the push-bar. A second link 42 ispivoted to the swinging arm 4() near the lower end of the latter, andthe link 42 is carried beneath the carriage B beyond the nigger C and ispivotally attached to one member, 43, of an elbowlever 43, the othermember, 43h, of the said elbow-lever being pivotally attached toa bar45, which enters the hydraulic-cushion tank provided for the saidpush-bar. The pivot 44 of the elbow-lever 43 is attached to anyconvenient support.

An auxiliary frame E is located on the platform 22, as is shown in Fig.1, extending transversely of the machine, as is indicated in dottedlines, Fig. 2. This auxiliary frame consists of two side beams 46, endbeams 46, and intermediate cross-beams 47, 48, and 49. A power shaft 50is journaled in suitable bearings on the side beams 46, between the endbeam 46u and the intermediate crossbeam 47, and the said power-shaft isprovided with two bevel-gears 51 and 52 and a suitable driving-pulley.Two parallel shafts 53 and 54 are journaled in suitable bearings 55,located on the intermediate cross-beams and the end beam 46u oppositethat at which the lower shaft is located, as is best shown in Fig. 3. Atone end of the shaft 53 a bevelgear 53 is secured, which meshes with thebevel-pinion 51, and at the corresponding end of the shaft o4 a beveledgear o4 1s secured, which meshes with the bevel-pinion 52.

Adjacent to the intermediate cross-beam 49, between said cross-beam 49and adjacent IOS IIO

end beam 46, gears 56 and 57 are secured, respectively,- to the shafts53 and 54, and these gears are in mesh, as is also shown in Fig. 3, andon the shaft 53 adjacent to the gear 56 a friction-clutch 58 is secured,and a smaller clutch 59 is correspondingly placed on the shaft 54. Itmay be here remarked that the shaft 53 is in two sections, as indicatedin Figs. 3 and 7.

A spool F is loosely mounted on the shaft 53 between the cross-beam 49and end beam 46u. This spool F has one section f of greater diameterthan the other section f', and where the two sections connect a spirallange 60 is formed upon the said spool. The spool is movable on theshaft 53 to and from the clutch 58, and when in engagement with theclutch the said spool is rotated. This spool F is adapted to communicateupward movement to the nigger C, and to that end a chain 61 is attachedto the larger section f of the spool, and this chain is carried upwardover a pulley 62, mounted in the main frame of the machine below thepush-bar l), as is shown in Fig. 1, and the said chain is then carriedunder and in engagement with a pulley 63,

mounted to turn in the nigger, C, and the other end of the chain isattached to the said frame at the rearof the nigger C, as is shown at 64in Fig. 1.

The object of the dog 24 on the nigger C is to enable the nigger to turnsmall logs or cants which it could not otherwise turn. The spool F isconstructed as above described in order that it may raise the niggerwith great velocity until the nigger reaches the log, and at such timethe chain winds up on the larger section f of the spool; but as soon asthe log is reached the spiral flange directs the chain to the smallersection f of the spool, thus diminishing the speed of the nigger, butincreasing its power. When the nigger is to be raised, the spool isthrown in engagement with the clutch 58, and when the nigger is todescend the spool is separated from the said clutch and the nigger willdrop of its own weight.

A plain spool G is looselymounted on the shaft 54, opposite thenigger-spool F, and the spool G as the shaft 54 is operated is adaptedto operate to raise the push-bar D. The said spool G is therefore mademovable to and from the clutch 59, being driven when in engagement withthe clutch and remaining idle when carried out of such engagement.

A chain 65 is attached at one end to the lower portion of the swingingarm 40 in the system of links connected with the push-bar D, as is shownin Fig. 1, and this chain 65 is carried upward and inward over a pulley67, suitably supported on the main frame ol the machine, as is alsoshown in Fig. 1. The

'chain 65 is then carried downward and outward or forward to anengagement with the said spool G. W'hen the spool is rotated byengagement with the clutch 59, the lower end of the main link 40 isdrawn upward, placing the series of links connected with it in theposition shown by dotted lines in Fig. 1, and the push-bar D is thencarried upward to the dotted position shown in the same figure. When thepush-bar is to be dropped, the spool Gr is disconnectedfrom the clutch59, whereupon the push-bar D will fall by gravity to its normalposition. (Shown in positive lines in Fig. l.)

Between the cross-beams 48 and 49 two clutches (preferablyfriction-clutches 68 and 69) are secured to the opposing ends of theshaft 53, and between these clutches a spool H is held to slide on thesections of the shaft 53 for engagement with either of the said clutches68 and 69, and at one end of this spool H a sprocket-wheel 70 is formed,as is best shown in Figs. 3 and 4. An endlcsschain 71 is passed aroundthe said sprocket-wheel 70 on the spool H and is then carried upward andis passed around a larger sprocket-wheel 72, secured about centrally onthe drive-shaft 31 for the log-deck skid-chains. Thus when the spool His in engagement with one clutchthe clutch 68, for example-the log-deckskidchains are made to travel in the direction of the nigger, and whenthe said spool H is in engagement with the other clutch, 69, the logdeckskid-chains are made to revolve in an opposite direction or away fromthe nigger. When the said spool H is out of engagement with both of theclutches 68 and 69, the said skid-chains remain idle.

The manner in which the spools F and Gr are shifted is shown in Figs. 3and 4 and consists of a shifting-lever 73, having loops 74 and 74,receiving and secured, respectively, to the outer ends of the outer hubportions ot' the spools G and F, and the shifting-lever is fulcrumedbetween its loops upon a bar 75, adjustably secured to a hanger 76. Thusit will be observed by moving the shifting-lever 73 in onedirectionmoutward, for example-- the nigger-spool F will be placed inengagement with its clutch-disk 58 and the bar-spool G will be carriedout of engagement with its clutch 59. When the shifting-lever is movedinward, the bar-spool G is placed in action and the nigger-spool F iscarried out of action.

A link 7 7 is pivoted to the outer end of the shifting-.lever 73, andthe said link extends parallel with one of the said beams 46 and isadjustably and pivotally attached, by means of a threaded bar 78, to theouter end of a lever 79, fulcrumed at its center upon a horizontalbracket 80, and at the inner end of this lever 79 a connecting-bar 81 ispivoted. The said connecting-bar 81 is likewise pi'voted to an uprightlink 82, fulcrumed at its lower end to a suitable support. The upperkend of this link 82 is pivoted to an upper transverse bar 83, plvoted atone end to a proper support,

IOO

the other end being secured to the main shiftl ing-bar 84, which extendsparallel and a requisite distance from and above the opposite side beam46 of the auxiliary frame E to a point beyond the end of the saidauxiliary frame at which the drive-shaft is located.

The spool H, controlling the movement of the skid-chains, is operated inthe following manner and from the same main shifting-bar 84, used forshifting the spoolsF and G. To that end a transverse link 85 is attachedto the said main shifting-bar 84 and to a member of an elbow-lever 86,suitably fulcrumed at the junction of its members, and the other memberof the said elbow-lever is pivotally attached to a link 87, extendinglongitudinally of the auxiliary frame E. This link 87 is pivotallyattached to the upper end of a bar 88, fulcrumed to a suitable supportat its lower end, and a screw-bar 89 is pivoted to the said pivoted bar88 and connects said bar with a short link 90. This link 90 is pivotallyattached to a shifting-lever 91, having a loop 92 between its ends whichreceives the sectional portion of the spool H. The opposite end portionof thevshifting-lever 91 is pivoted to an adjustable bracket 93, as isshown in Fig. 3.

At the extreme outer end of the shiftingbar 84 a lever 94 is located,which lever is adapted to move in four directions, forward and rearwardand to one or the other side, and, according to the direction in whichthe lever 94 is moved, one or the other of the main parts described willbe brought into or carried out of action. To that end the lever 94 ispassed down through an opening 94n in the bed A, and where the leverpasses through said opening a longitudinal slot 95 is made in the lever,and the lower end of the lever terminates in a fork 95. A short shaft94h is mounted for rotary motion on the bed A, which shaft crosses theopening 94 in the bed and passes through the slot 95 in the lever, beingpivotally connected with the lever by a pin 94, passing through theslotted portion of the lever and through the shaft, as is shown in Fig.8. The shifting-bar 84 has a horizontal fork 84 at its outer end, intowhich the fork 95u of the lever 94 is entered, and a shaft 84b ismounted to turn in the fork 84, and the fork 95 of the lever 94 spansthe shaft 84b and is pivotally attached thereto by a pin 84C.

In Figs. 6 and 7 I have shown the location of a saw-arbor 96, the saw 97thereon, and the driving-pulley 98 for the arbor.

It is obvious that the log must turn forward upon the skid-chains as thenigger cornes up through the carriage, as it cannot possibly go in anyother direction, due to the direction of motion of the skid-chains. Inturning three or more cants at the same time they are pushed back on theheadblocks before the nigger comes up.

Having thus described my invention, I claim as new and desire to secureby Letters Patent-- 1. In a log-sawing machine, a frame, a carriagemounted to travel upon the frame, a nigger mounted for movement on theframe and through the carriage, a hydraulic cushion for the nigger, adog carrie'd by the nigger, and means upon the carriage for closing thedog in the nigger at the downward movement of the latter, as described.

2. In a log-sawing machine, a frame, a carriage mounted upon the frame,a nigger mounted for movement in the frame and through the carriage, ahydraulic cushion for the nigger, a dog carried by the nigger, adaptedto enter the same and drop therefrom by gravity, a cam-surface upon thecarriage for directing the dog. within the nigger at its downwardmovement, a driving mechanism, and a lifting connection between the saiddriving mechanism and the nigger, as described.

8. In a log-sawing machine, a frame, a carriage mounted upon the frame,anigger mounted for movement in the frame and through the carriage, ahydraulic cushion for the nigger, a dog carried by the nigger, adaptedto enter the same and to drop therefrom by gravity, a cam-surface uponthe carriage for directing the dog into the, nigger in its downwardmovement, a driving mechanism for the nigger, adapted to lift the same,which driving mechanism comprises a drive-shaft havinga clutch thereon,a spool on the said shaft, a shifting device for the spool, pulleyslocated upon the frame and within the said nigger, and a flexibleconnecting medium between the said spool and the frame, which connectingmedium en- IOO gages with the pulleys, passing over the pulley on theframe and under the pulley carried by the nigger, as described.

4. In a log-sawing machine, a frame, a carriage mounted upon the frame,a nigger mounted for movement in the frame and through the carriage, ahydraulic cushion for the lower end of the nigger, a driving-shaft, aclutch secured to the driving-shaft, a spool mounted to slide on thedriving-shaft, constructed in two diameters, a spiral flange located atthe junction of the two diameters of the spool, a shifting device forcarrying the spool to and from the clutch, a friction-roller on theframe, a second friction-roller mounted in the said nigger, and a chainattached to the said spool, which chain is passed over the pulley on theframe and under the pulley in the nigger to an attachment to the frame,whereby the initial upward movement of the nigger is rapid by reason ofthe chain winding on the larger portion of the spool, and whereby thefinal upward movement of the said nigger is slow and is increased instrength by reason of the chain winding at such time on the smallerdiameter of the said spool, as described.

5. In a log-sawing machine, a frame, a nig- IIO ger mounted for movementin the frame, a hydraulic cushion for the bottom of the nigger, a dogcarried by the said nigger, a pulley mounted on the frame, a secondpulley mounted in the nigger, a drive-shaft, a clutch on the said shaft,and a spool in two diameters and provided with a peripheral annularflange, adapted to impart differential speed, a shifting device for thespool, and a chain connected with the spool and with the frame, whichchain passes over the pulley on the frame and under the pulley carriedby the nigger, as described.

6. In a log-sawing machine, a nigger, a hydraulic-cushion tank for thenigger, means for moving' the nigger and releasing the same, the niggerdropping by gravity, an angular pushbar pivoted in the frame, its uppermember being provided with'teeth and adapted in one position oit' thepush-bar to incline in direction of the nigger, a controlling-bar inpivotal connection with the frame, a hydraulic cushion for thecontrolling-bar, a drive-shaft, a clutch secured on the drive-shaft, aspool loosely mounted on the drive-shaft, a shiftinglever connected withthe said spool, a pulley mounted on the frame, an operating device forthe push-bar, and a chain connected with said spool, which chain ispassed over the said pulley and is connected with the said operatingdevice for the push-bar.

In testimony whereof I have signed my name to this specication in thepresence of two subscribing witnesses.

CHARLIE ENOCH BROVN.

Witnesses: v

Jol-IN W. STREET, G. W. POWELL

